Astronomy Resources

Click on the title of each resource to follow a link to the content. Note that some resources link to external websites.

Are you an educator or student? Check out our Astronomy Education Resources!

Amateur Astronomers Association (AAA)

This New York City-based group was founded in 1927 to promote the study of Astronomy, emphasizing its cultural and inspirational value. The fund astronomy lectures, facilitate solar and nighttime observation sessions, produce a magazine and podcast, offer classes for amateur astronomers, and more. Visit their website to view their full list of events.

American Astronomical Society (AAS)

The AAS’s mission is to enhance and share humanity’s scientific understanding of the universe. They do this by working with professional astronomers to foster the next generation of science professionals, providing professional development opportunities, publishing a scientific journal, holding one of the largest astronomy conferences worldwide, and more. Their website is full of the latest in astronomical developments.

AAS Worldwide Telescope

Use your browser or download the Windows application to use this advanced program to explore the Universe. View the night sky from Earth to check out constellations, planets, and Messier objects from our point of view, or blast off to examine anything from the Galilean moons to the edge of the known Universe. Download Guided Tours created by other users to sit back, relax, and enjoy a scripted tour.

Amateur Observers' Society of New York (AOSNY)

The AOSNY is an astronomy club that has served Long Islanders of all ages for more than 50 years. Join them at the Custer Observatory in Southold on clear Saturday nights to explore the sky with other amateur astronomers, or visit their website to learn about upcoming special events.

American Meteor Society (AMS)

The AMS is a New York-based nonprofit dedicated to the study and observation of meteors. Discover upcoming meteor showers, how to spot an elusive "fireball," and ways to aid professional astronomers studying meteors on their website.

Association of Lunar & Planetary Observers (ALPO)

ALPO is an international organization devoted to studying the Sun, Moon, planets, asteroids, meteors, and comets. Their website highlights several solar system objects by listing recent photos, observable features, and newsletters detailing interesting times to observe. ALPO’s publications are perfect for serious solar system observers and include astronomy-related news, reports, reviews, and more from fellow astronomers.

Astronomical League

This group is composed of over 240 local amateur astronomical organizations. Collectively, their goal is to foster astronomical education. Their website includes information about special events, contests (often open to a wide range of ages), conventions, and more. Take a look at their high-quality downloadable posters including how to use a telescope, our location in the Milky Way, and seasonal guides to the night sky.

Astronomical Society of Long Island (ASLI)

ASLI is a group of night sky enthusiasts who meet every Wednesday night at 8 pm in the Reichert Planetarium here at the Vanderbilt Museum. They state their purpose best: “We are a group of dedicated amateur astronomers and telescope makers with a passion for our hobby. We welcome new visitors, you do not need to own a telescope, and there is no requirement to join the club in order to attend meetings or to come to our observing sessions. We only ask that you come with an excitement to explore the wonders of the night sky.”

Astronomy Picture of the Day

Every day, this website is updated with a breathtaking image of our universe and a caption written by a professional astronomer. Check back often for your daily dose of space, or scroll through the archives and enjoy thousands of images from the past several decades.

Astrospheric

Astrospheric provides advanced weather forecasting for astronomers in the continental US and Canada. It provides detailed information about cloud cover, precipitation, dewpoint, winds, the phase of the Moon, and provides an easy key to quickly interpret whether it’s worth getting your telescope out or not.

Bad Astronomy Blog

The Bad Astronomy web pages and blog are devoted to airing out myths and misconceptions in astronomy and related topics. Run by astronomer, teacher, and lecturer Phil Plait, Bad Astronomy corrects common misconceptions and introduces the latest astronomical discoveries with solid information and a fun tone.

Cloudy Nights

Cloudy Nights is an online astronomy community. Their goal is to assist amateur astronomers in better understanding the equipment that goes with the hobby and to share astronomical knowledge with the public. Cloudy Nights members accomplish these goals by providing forums for reviews of telescopes and accessories and encouraging and sponsoring events and contests to get kids and beginners interested in the hobby.

Custer Institute

The Custer Institute and Observatory, located in Southold, is Long Island's oldest public observatory. Visit them every Saturday from dusk until midnight when staff and volunteers will give tours of the night sky using their powerful telescopes. They also feature art exhibits, lectures, classes, concerts, and more.

Dark Sky Map

This website provides maps detailing light pollution, weather, and great night sky observation spots all around the globe. Take a look at their interactive maps to find a location to stargaze near you.

Google Sky

Scroll around this gigantic composite image of real photographs of the nighttime sky. Scroll in to see beautiful images of stars, nebulae, and other galaxies, or leave the visual spectrum behind to see what infrared and microwave information we receive from space. Available in your web browser.

Hamptons Observatory

The Hamptons Observatory, located on the South Fork of Long Island, aims to promote an understanding of and appreciation for science through free, year-round, family-friendly educational programs that focus on science in general and astronomy in particular. The observatory features Long Island’s largest research-grade public telescope. Visit their website to explore upcoming events, lectures, movie screenings, observation nights, and more.

If the Moon Were Only One Pixel

This website contains a scale model of our Solar System where each pixel is the size of the Moon. Scrolling through our solar system drives home just how much space is in outer space. View distances in different units, experience the speed of light, and enjoy the cheeky narrator’s comments during your trip.

International Dark-Sky Association (IDA)

The IDA works to reduce light pollution and distribute information about the destructive impact of over-lighting. Visit their website to learn about the environmental impacts of light pollution, options for responsible lighting, and step-by-step guides to help you reduce your impact on our night sky.

Kurzgesagt

Kurzgesagt (translated from German: “in a nutshell”) is an animation studio explaining things with “optimistic nihilism.” Their short and informative videos blend humor, facts, and a unique style of animation to investigate scientific topics from bacteria to the Universe.

Library Telescope

Did you know many libraries loan more than books? The libraries participating in the Library Telescope program have telescopes to check out! Their website includes how-to videos and helpful links guiding through transporting and using the telescope.

The Lunar and Planetary Institute (LPI)

The LPI’s mission is to advance understanding of the solar system by providing exceptional science, service, and inspiration to the world. Explore scientific journals, huge astronomical databases, articles about current astronomical events, and more on their website. For younger astronomers, hey regularly host family-friendly virtual events, provide activity guides designed for at-home learning, and offer a wide range of resources for classroom education.

NASA Space Place

This website provides a fun place for kids to learn about the solar system and the universe with games, crafts, stories and animations.

NASA’s Eyes

NASA’s Eyes is a visualization tool featuring 3D models using NASA data. Examine the planets and their moons, join the rovers on the surface of Mars, travel alongside the many probes in space, or take a closer look at major weather events here on Earth. Available to download on Windows and Mac.

Night Sky Network

The Night Sky Network is a nationwide coalition of amateur astronomy clubs bringing the science, technology, and inspiration of NASA's missions to the general public. They share their time and telescopes to provide you with unique astronomy experiences at science museums, observatories, classrooms, and under the real night sky. Explore their website for exciting space news, tools to plan your next stargazing night, and to discover local astronomy clubs and events.

OpenSpace Project

From their website: “OpenSpace is open-source interactive data visualization software designed to visualize the entire known universe and portray our ongoing efforts to investigate the cosmos.” OpenSpace is a highly advanced program that supports the interactive presentation of dynamic data from observations, simulations, and space mission planning and operations. Available to download on Windows and Mac.

SETI Institute

SETI stands for “Search for Extraterrestrial Intelligence.” This acronym represents an international effort not only to search the cosmos for other intelligent life (a.k.a. aliens), but also to research the evolution of the universe and the properties that make a planet capable of supporting life. Explore their website to discover their current research and what will happen if they detect a signal from space.

Sky & Telescope

Sky & Telescope is a monthly magazine covering amateur astronomy, including current astronomical events, reviews of books and tools related to astronomy, astrophotography, and more. Their website features many free articles and great resources for any amateur astronomer. Their interactive star chart is a fantastic tool to orient yourself in the night sky and locate some easy-to-spot constellations and other celestial objects, whether you’re using a telescope or not.

The Sky LIVE

The Sky LIVE provides accurate real-time data and finder charts for interesting Solar System objects. They currently track more than 400 objects, including comets, planets, asteroids and spacecrafts. You can easily search their website by object type or by viewing location.

Sky Maps

Do you enjoy looking at the night sky? Sky Maps provides free, printable maps of the stars each month to guide you through the sky. Use their informative Evening Sky Maps to locate constellations, planets, star clusters, nebulae, and more! Their website also provides a huge list of books, star atlases, telescopes, software, and more for astronomy enthusiasts of all ages.

Sky Safari

SkySafari is a telescope user's guide to the night sky, featuring tools to plan and record observation sessions, notify you about upcoming astronomical events, and guide you through the night sky. SkySafari 7 Plus shows you 2.5 million stars, and 32,000 deep sky objects, and 7,000 asteroids, comets, and satellites with updatable orbits. Plus, it offers state of the art mobile telescope control. A "Pro" version with even more information is also available. Available for iOS, Android, and Mac.

SkyView

SkyView is a free, easy-to-use app for locating stars, constellations, planets, and satellites. Simply point your phone or tablet to the sky to identify what you're looking at. It's well suited to beginning and amateur astronomers. SkyView has a free version with limited stars and constellations, and a paid version with a wider array of astronomical objects. Available on iOS and Android.

Solar System Scope

Fly through our Solar System to explore planets, orbits, comets, asteroids, dwarf planets, and more, or zoom out to the edge of the Milky Way to see the spiral arms of our galaxy, nebulae, star clusters, and other Messier objects. It has a simple UI and many settings so you can adjust what you see, making this program very easy to use. This solar system model is available in your browser, to download to your computer, or as an app for iOS and Android.

Space Flight Now

Excited about an upcoming rocket launch? Curious about current space missions? Visit this website for the latest articles and announcements from spaceflight organizations around the world.

Space Weather

Space Weather provides reports on aurorae, meteor showers, cosmic rays, NEOs ("near-Earth objects," the asteroids traveling closest to our planet in space), sunspots, solar flares, CMEs ("coronal mass ejections"), and more! It's your one-stop shop for all astronomical weather events.

Spot the Station

This website is all you need to locate the International Space Station (ISS) in the night sky. Learn how to differentiate the ISS from other objects visible at night, and even enter your location for detailed information on when, where, and how to view the ISS.

Stellarium

This resource is a favorite at the Reichert Planetarium. Stellarium has a user-friendly interface allowing anyone to explore the sky from here on Earth. During the day, watch how the Sun moves from east to west. At night, explore the constellations (including images from many different cultures), the planets, nebulas, star clusters, other galaxies, and more. Stellarium is available in your web browser, to download for Windows, Mac, and Linux, or as an app for iOS and Android.

Telescopius

The Telescope Simulator is a great way to explore what celestial objects look like through different types of telescopes. Adjust the properties of your virtual telescope (including the focal length, aperture, eyepiece magnification, and more) to explore how they affect the way we observe space. More experienced astronomers will enjoy entering information about their own telescopes and practicing observing different targets (including comets), using common astrophotography tools, planning targets for their next observation night, and more.

What's Out Tonight?

Visit this page to explore everything from deep sky objects (including nebulae and galaxies) to the mythology behind constellations you can spot from your backyard. Be sure to download and print one of their free star charts before going stargazing.